A teacher gives her class at least one unannounced quiz every week. The students never know which day it will fall on. The teacher is attempting to influence their study habits by using a _____
A)variable-ratio.
B)fixed-ratio.
C)variable-interval.
D)fixed-interval.

Question

Quizplus · Accepted Answer

The schedule is based on intervals of time. The intervals vary so it is a variable interval schedule.

A Teacher Gives Her Class at Least One Unannounced Quiz